Butterfly throttle valve with a raised upper lip

Details Butterfly throttle valve with a raised upper lip Butterfly throttle valve with a raised upper lip

1979-10-03

1981-10-27

Miles, Tim R.

Gas and liquid contact apparatus

Fluid distribution

Valved

F02M 308

Patent

active

042973023

ABSTRACT:
In an air-fuel mixture supply device for an internal combustion engine, a butterfly-type throttle valve is disclosed whose upstream face is formed with a raised portion extending around the major of its periphery, but which is broken at least at the middle of the downstream part of the periphery of this upstream face. Thereby distribution of the air-fuel mixture is improved between the cylinders of a multi-cylinder engine.

REFERENCES:
patent: 3057606 (1962-10-01), Hegna
patent: 3176704 (1965-04-01), De Palma
patent: 3298677 (1967-01-01), Anderson
patent: 3759499 (1973-09-01), Lang
patent: 3785628 (1974-01-01), Lang
patent: 3914350 (1975-10-01), Sang-Yol
patent: 4146596 (1979-03-01), Saito et al.

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